SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN

A new simple and rapid dispersive liquid-liquid microextraction has been applied to preconcentration trace levels of bismuth as a prior step to its determination by spectrophotometric detection. In the proposed method, dithizone was used as a chelating agent, and tetrachloride carbon and ethanol are...

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Autores principales:	NIAZI,ALI, HABIBI,SIMA, RAMEZANI,MAJID
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Bismuth Dispersive liquid-liquid microextraction Box-Behnken design Spectrophotometry
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300023
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spelling	oai:scielo:S0717-970720130003000232014-09-09SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKENNIAZI,ALIHABIBI,SIMARAMEZANI,MAJID Bismuth Dispersive liquid-liquid microextraction Box-Behnken design Spectrophotometry A new simple and rapid dispersive liquid-liquid microextraction has been applied to preconcentration trace levels of bismuth as a prior step to its determination by spectrophotometric detection. In the proposed method, dithizone was used as a chelating agent, and tetrachloride carbon and ethanol are selected as extraction and dispersive solvent. The optimization strategy is carried out by using two level full factorial designs. Results of the two level full factorial design (2(4)) based on an analysis of variance demonstrated that the pH, concentration of dithizone, amount of dispersive and extraction solvents were statistically significant. Optimal condition for four variables: pH, concentration of dithizone, amount of dispersive and extraction solvents are obtained by using Box-Behnken design. Under the optimum conditions, the calibration graphs were linear in the range of 5-300 ng mL-1 with detection limit of 1.6 ng mL-1 (3δB/m) and the enrichment factor of this method for bismuth reached at 150. The relative standard deviation (R.S.D.) is 2.3% (n = 5, c = 50 ng mL-1). The method is successfully applied to the determination of trace amount of bismuth in water samples.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.3 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300023en10.4067/S0717-97072013000300023
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bismuth Dispersive liquid-liquid microextraction Box-Behnken design Spectrophotometry
spellingShingle	Bismuth Dispersive liquid-liquid microextraction Box-Behnken design Spectrophotometry NIAZI,ALI HABIBI,SIMA RAMEZANI,MAJID SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
description	A new simple and rapid dispersive liquid-liquid microextraction has been applied to preconcentration trace levels of bismuth as a prior step to its determination by spectrophotometric detection. In the proposed method, dithizone was used as a chelating agent, and tetrachloride carbon and ethanol are selected as extraction and dispersive solvent. The optimization strategy is carried out by using two level full factorial designs. Results of the two level full factorial design (2(4)) based on an analysis of variance demonstrated that the pH, concentration of dithizone, amount of dispersive and extraction solvents were statistically significant. Optimal condition for four variables: pH, concentration of dithizone, amount of dispersive and extraction solvents are obtained by using Box-Behnken design. Under the optimum conditions, the calibration graphs were linear in the range of 5-300 ng mL-1 with detection limit of 1.6 ng mL-1 (3δB/m) and the enrichment factor of this method for bismuth reached at 150. The relative standard deviation (R.S.D.) is 2.3% (n = 5, c = 50 ng mL-1). The method is successfully applied to the determination of trace amount of bismuth in water samples.
author	NIAZI,ALI HABIBI,SIMA RAMEZANI,MAJID
author_facet	NIAZI,ALI HABIBI,SIMA RAMEZANI,MAJID
author_sort	NIAZI,ALI
title	SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
title_short	SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
title_full	SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
title_fullStr	SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
title_full_unstemmed	SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN
title_sort	spectrophotometric determination of bismuth in water samples by dispersive liquid-liquid microextraction after multivariate optimization based on box-behnken
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300023
work_keys_str_mv	AT niaziali spectrophotometricdeterminationofbismuthinwatersamplesbydispersiveliquidliquidmicroextractionaftermultivariateoptimizationbasedonboxbehnken AT habibisima spectrophotometricdeterminationofbismuthinwatersamplesbydispersiveliquidliquidmicroextractionaftermultivariateoptimizationbasedonboxbehnken AT ramezanimajid spectrophotometricdeterminationofbismuthinwatersamplesbydispersiveliquidliquidmicroextractionaftermultivariateoptimizationbasedonboxbehnken
_version_	1718445494870474752

SPECTROPHOTOMETRIC DETERMINATION OF BISMUTH IN WATER SAMPLES BY DISPERSIVE LIQUID-LIQUID MICROEXTRACTION AFTER MULTIVARIATE OPTIMIZATION BASED ON BOX-BEHNKEN

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